i was given this as a gift from amazon after i read one user had success in a mac pro tower (older). i have a 2009 mac pro & cant get port multiply to work. just a single drive shows up as if it were connected to my esata card connected to the board. i am using a 2 bay & a media sonic probe 4-bay & really need port multiply to carry out photography business.

i didn't have any info on drivers, but does the mac pro need them? help?